Hey there !
Molecular Weight: 262.86 g/mol
Volume in liters : 1,000 mL => 1,000 / 1000 => 1 L
Number of moles of solution :
number of moles = volume x molarity
number of moles = 1 x 0.3 => 0.3 moles
Therefore:
1 mole Mg₃(PO₄)₂ ------------------- 262.86 g
0.3 moles ----------------------------- mass of Mg₃(PO₄)₂ ??
mass of Mg₃(PO₄)₂ = 0.3 x 262.86 / 1
mass of Mg(PO₄)₂ => 78.858 g
Hope this helps!
Answer:
c. lava
if u know about rock formation for igneous rock is formed from lava and when cool it becomes rock
Answer:
its either B or C all i got hope that helps
Explanation:
Answer:
The molarity of ZnCl2 is 1.699 mol/ L.
Explanation:
Balance chemical equation:
Zn(s) + CuCl2(aq) → ZnCl2(aq) + Cu(s)
Given data:
mass of zinc = 30 g
total volume of solution = 270 mL
molarity of ZnCl2 = ?
Solution:
First of all we will calculate the moles of Zn.
molar mass of zinc = 65.38 g/mol
number of moles = mass / molar mass
number of moles = 30 g/ 65.38 g/mol
number of moles = 0.4588 mole
From the balance chemical equation we will compare the moles of Zn and ZnCl2
Zn : ZnCl2
1 : 1
0.4588 : 0.4588
The number of moles of ZnCl2 are 0.4588 mol.
Molarity of ZnCl2:
Total volume of solution is 270 mL. We will convert it into liter.
1 L = 1000 mL
270/1000 = 0.27 L
Molarity = moles of solute / volume of solution in liter
Molarity = 0.4588 mol / 0.27 L
Molarity = 1.699 mol/ L